HTML Entity Encoder Online
Encode and decode HTML entities with a built-in reference table. Free, fast, and runs 100% in your browser.
Special characters like <, >, and & have specific meanings in HTML — displaying them literally requires entity encoding. This tool converts special characters to HTML entities and decodes entities back to characters. Essential for preventing XSS vulnerabilities, displaying code snippets, and embedding special symbols in web content.
Feature Overview
| Feature | Details |
|---|---|
| Encode | ✓ |
| Decode | ✓ |
| Reference table | 200+ entities |
| XSS prevention | ✓ |
| Privacy | 100% client-side |
Frequently Asked Questions
What is XSS and how does encoding help?
XSS (Cross-Site Scripting) injects malicious scripts via user input. Encoding < and > as < and > prevents input from being interpreted as HTML tags.
Should I use named or numeric entities?
Named entities like & are more readable. Numeric entities like & are more universally supported. Both render identically in browsers.
Does it handle Unicode entities?
Yes. Characters outside the ASCII range are converted to numeric entities for safe HTML embedding.